http://math.berkeley.edu/~theojf/Midterm2Practice.pdf [Broken](adsbygoogle = window.adsbygoogle || []).push({});

can someone please help me on problem number 2 of the link above?

apologies for the bad handwriting. my professor is just horrible with that.

i've done max and min with multivariables before and ive done chain rule , but i've never combined the two. also, in that problem, the only critical point seems to be a saddle point, so i'm not sure what the "lowest" point is referring to

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# Finding max/min of 3d graphs with chain rule

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